NEW YORK (CBSNewYork/AP) — Instead of chatting about Bartolo Colon’s pitching performance, New York Yankees fans were left wondering how a ticket agent accidentally distributed the personal information of more than 20,000 season-ticket holders.

A team employee sent an email to several hundred season-ticket holders Monday and mistakenly attached an internal spreadsheet that contained names, addresses, phone numbers, fax numbers and email addresses for holders of partial and full-season ticket plans.

The Yankees have started sending out letters apologizing to those affected.

The leak was first reported by Deadspin.com.

On Wednesday, the team said that no other personal or financial information — such as social security numbers, credit card data or banking records — was included in the document.

The Yankees said they immediately took measures to make sure a similar mistake won’t happen again.

The letter says the Yankees “deeply regret this incident, and any inconvenience that it might cause.”

“A mistake was made. We are being as transparent as possible and have already taken measures and steps to ensure this never happens again,” team spokesman Jason Zillo said.

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